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Direct numerical simulation of a short laminar separation bubble and early stages of the bursting process
KTH, School of Engineering Sciences (SCI), Mechanics.
KTH, School of Engineering Sciences (SCI), Mechanics.ORCID iD: 0000-0001-7864-3071
2007 (English)In: New Results In Numerical And Experimental Fluid Mechanics VI / [ed] Tropea, C; Jakirlic, S; Heinemann, HJ; Henke, R; Honlinger, H, 2007, Vol. 96, 235-243 p.Conference paper (Refereed)
Abstract [en]

Direct numerical simulation of a pressure-induced short laminar separation bubble developing on a flat plate has been carried out. Transition in this bubble was triggered by small disturbance input with a fixed frequency and fixed spanwise wave number. The resulting short bubble was shown to be converged in time to a statistically steady state, while possessing essential features of short laminar separation bubbles as reported in the literature. In the present case disturbance input is required to maintain a short bubble. Switching off this disturbance input yields a growing separation bubble. This phenomenon is denoted as bubble bursting, since indication is found that the bubble develops towards a long-bubble state.

Place, publisher, year, edition, pages
2007. Vol. 96, 235-243 p.
, Notes on Numerical Fluid Mechanics and Multidisciplinary Design, ISSN 1612-2909 ; 96
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-39590ISI: 000252105000029ScopusID: 2-s2.0-35948964469ISBN: 978-3-540-74458-0OAI: diva2:441959
15th Symposium of the German-Society-for-Aeronautics-and-Astronautics/German-Aerospace-Aerodynamics-Association Location: Tecn Univ Darmstadt, Darmstadt, Germany, Date: NOV 29-DEC 01, 2006
Available from: 2011-09-20 Created: 2011-09-12 Last updated: 2011-09-20Bibliographically approved

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